UT HIFI tube amp kits

Erik Konka Headphone Amp #1 is the result of a collaboration between UralTone and Estonian high-end tube amplifier designer Erik Konka. Here you can find the documents for building the kit.

UralTone Subwoofer Amplifier is equipped with versatile controls, a 300W active crossover/amplifier for passive subwoofer speakers.

The popular tube RIAA designed by Mauri Pännäri is continued as a discrete JFET implementation. This illustrated article guides you through the construction of the kit.

UralTone EL95 Stereo Micro Amp kit illustrated assembly guide.

The RIAA preamplifier designed by amplifier guru Mauri Pännäri is a popular and highly regarded building project. The circuitry is based on two amplifier tubes and one FET transistor per channel. By changing the FET type, the series is suitable for both MM and MC cartridges. This guide provides instructions on how to build the RIAA preamplifier.

STEP UP 12VDC-B+ TUBE AMP PSU KIT The use of switch-mode power supplies in tube amplifiers is still rare. There is no functional issue with switch-mode power supplies as long as they are well designed, use quality components, and ensure that individual components can be replaced by service technicians, as entire modules are virtually never […]

The UralTone All Octal SE Stereo amplifier is a traditional Single Ended stereo amplifier with one exception. It operates on a 12VDC (7A) power supply, so there is no 230VAC network input or transformer within the amplifier itself, making assembly safer for beginners. Inside the chassis, there are two boost regulator-type power supplies that elevate the incoming 12V voltage to about 300V, enabling the tubes to operate at optimal voltage and current levels.

UralTone PP-EL34 is our most popular Hi-Fi kit. Its power is sufficient for most purposes and the sound quality of the amplifier is first class. This article goes through the construction of the amplifier in detail.

UralTone PP-EL34 is high quality stereo HIFI amplifier kit.

Pictorial assembly guide for UralTone PP-EL84 2.0 Hi-Fi kit.